Monday, July 7, 2014

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 070944
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
444 AM CDT MON JUL 7 2014


WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE-
DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-
IROQUOIS-FORD-LAKE INDIANA-PORTER-NEWTON-JASPER-BENTON-
444 AM CDT MON JUL 7 2014 /544 AM EDT MON JUL 7 2014/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...TODAY AND TONIGHT.

WEATHER HAZARDS EXPECTED:

THUNDERSTORMS...WHICH MAY PRODUCE:
OCCASIONAL CLOUD TO GROUND LIGHTNING.
TORRENTIAL DOWNPOURS.
A FEW STRONG WIND GUSTS.

AREAS AFFECTED AND TIMING:

A CLUSTER OF STORMS CONTINUES TO SHIFT EAST SOUTHEASTWARD
ACROSS PORTIONS OF EAST CENTRAL ILLINOIS AND NORTHWESTERN
INDIANA EARLY THIS MORNING. EXPECT THIS ACTIVITY TO MOVE OUT OF
THE AREA BY MID MORNING. THE MAIN THREAT OF THUNDERSTORMS THIS
AFTERNOON WILL LARGELY REMAIN TO THE SOUTH OF THE AREA.
HOWEVER...THE THREAT FOR ANOTHER ROUND OF THUNDERSTORMS WILL
RETURN TO AT LEAST PORTIONS OF THE AREA LATER TONIGHT INTO
EARLY TUESDAY MORNING.


DISCUSSION:

A COLD FRONT MOVING OVER THE AREA THIS MORNING WILL STALL
ACROSS CENTRAL ILLINOIS TODAY...AND ESSENTIALLY KEEP THE MAIN
THREAT FOR THUNDERSTORMS THIS AFTERNOON MAINLY TO SOUTH OF THE
AREA. HOWEVER...ANOTHER WEATHER DISTURBANCE IS EXPECTED TO
QUICKLY APPROACH THE AREA TONIGHT...WITH A SECOND ASSOCIATED
SURFACE COLD FRONT LIKELY TO MOVE ACROSS THE AREA BY EARLY
TUESDAY MORNING. SHOWERS AND THUNDERSTORMS COULD DEVELOP AHEAD
OF THIS COLD FRONT AND IMPACT AT LEAST PORTIONS OF THE AREA
LATE TONIGHT INTO EARLY TUESDAY MORNING. IT CURRENTLY APPEARS
THE MAIN THREAT WITH THESE STORMS WILL BE LIGHTNING ALONG WITH
A BRIEF PERIOD OF HEAVY RAINFALL. THE THREAT FOR SEVERE WEATHER
WITH THIS ACTIVITY APPEARS LOW ACROSS MUCH OF NORTHERN ILLINOIS
AND NORTHWESTERN INDIANA. THE BETTER THREAT FOR SEVERE STORMS
LOOKS TO REMAIN TO THE SOUTH ACROSS CENTRAL ILLINOIS AND TO THE
WEST ACROSS IOWA.


.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

THERE WILL CONTINUE TO BE A CHANCE FOR THUNDERSTORMS TUESDAY.

ADDITIONAL PERIODS OF SHOWERS AND THUNDERSTORMS ARE POSSIBLE
FRIDAY THROUGH SUNDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS UNLIKELY THROUGH TONIGHT.

&&

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